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怎样滤除这种噪声信号

Other Parts Discussed in Thread: LMZ13610

      我所使用的芯片是 LMZ13610 用5V 转3.3V (这个芯片推荐最小使用电压是6V,不过5V也可以正常输出)。

输出用两个47uf电容滤波,输出波形如下图。会出现周期性的这种噪声信号,后来多次调整滤波电容都

没有办法滤除,请问 对这样的噪声该怎样滤除。